Edmund Venables, Dictionary of National Biography… (1885)
“ In the civil anarchy which followed, the loyalty of Alexander, as of his powerful kinsmen Roger and Nigel of Ely, became strongly suspected. The possession of castles, so many and so strong, placed these prelates in a position of independence which rendered them dangerous to the crown. Stephen's suspicions were carefully fomented by his lay advisers, jealous of the overweening power of the churchmen. Unwisely listening to their persuasions, he resolved to make himself master of the three bishops and their castles. ”
